420293511 has 24 divisors (see below), whose sum is σ = 669736080. Its totient is φ = 251856000.

The previous prime is 420293507. The next prime is 420293519. The reversal of 420293511 is 115392024.

It is not a de Polignac number, because 420293511 - 2² = 420293507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420293519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15040 + ... + 32661.

It is an arithmetic number, because the mean of its divisors is an integer number (27905670).

Almost surely, 2^420293511 is an apocalyptic number.

420293511 is a deficient number, since it is larger than the sum of its proper divisors (249442569).

420293511 is a wasteful number, since it uses less digits than its factorization.

420293511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47807 (or 47804 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 420293511 is about 20501.0612164346. The cubic root of 420293511 is about 749.0616478165.

The spelling of 420293511 in words is "four hundred twenty million, two hundred ninety-three thousand, five hundred eleven".